Rockwell Automation AK DBU - Dynamic Braking Unit 600/690 VAC - Manual (Page 32)

B-2 CE Conformity
environment, it is not intended to be used on a low-voltage public
network which supplies domestic premises. If used in a residential or
domestic environment it
will cause radio interference. The user is
required to take all the necessary measures to prevent interference in
addition to the essential requirements for CE compliance listed
below.
• Conformity of the drive with CE EMC requirements does not
guarantee that the entire machine installation will comply with CE
EMC requirements. Many factors can influence total machine and
installation compliance.
Conditions 1 to 6 listed below must be satisfied in order for the DBU to
meet the requirements of EN61800-3.
1. The DBU and brake resistors must be installed in a cabinet or
enclosure which provides good attenuation of radiated radio
frequency emissions from the DBU and brake resistor.
Such enclosures incorporate the following construction features:
• enclosure of steel construction surrounds the DBU and the brake
resistor on all sides, top and bottom
• conductive, corrosion-resistant (not painted) mounting surfaces
inside
• high frequency, low impedance electrical bonding between all
sides and earth
• continuous metal-to-metal contact between adjacent sides, top
and bottom
• continuous conductive gasketing at mating surfaces of opening
doors or removable covers
• conductive screening over all enclosure openings, including
ventilation openings, such that no single opening is larger than
6mm in diameter (0.24 in).
2. Use of CE compliant inverter(s).
3. Review important precautions/attentions statements throughout this
document before installing the DBU.
4. Grounding as described on page B.4.
5. All Power wiring (except line input) and control wiring outside the
cabinet must be braided, shielded cable with a coverage of 75% or
better, or metal conduit, or conductors with equivalent attenuation.
6. The shield of all cables outside the cabinet must be connected to the
cabinets earthed bus bar or to the cabinet enclosure using EMC style
cable glands.
For additional requirements refer to the Drive(s) User Manual.
Essential Requirements for CE Compliance